Hemispheres Of The Brain :: essays research papers

Hemispheres of the BrainAs I was reading the textbook I came upon a section that I thought to be instead fascinating. It talked active people who have a brain that functions like devil different people inside of the brain. This is of course the Split-BrainPersonality. As I plain this topic in more detail I effect it to be quiteb thoroughfare and yet very detailed. I found that I needed a dictionary to be able toread in all of the medical journals and books that are out there, to be able tounderstand what it was exactly, that I was reading. But with a little take up and investigate I found that this is a precise science that is still largely full ofmysteries.The study of hemispheric asymmetry with in the cerebral cortex had longbeen a fascination with the human race. The ancient Aztec cultures used toperform a eccentric of brain surgery on humans. This is evident from the humanremains that we husking with incisions and fragments missing of the skull. Whetheror not these pri mitive surgeries were successful is unknown. The earliest flairfor man to observe the brain was by noticing brain damage to a particular areaof the brain that was damaged. Such observations were first recorded nearly 5,000years ago (Myers,1995). The most popular case is that of Phineas Gage arailroad worker that had severe frontal lobe damage. This happened when a railroad spike was shot through his head by a piece of dynamite. Miraculously helived through the experience, but with a severe reposition in his personality. Fromthis physiologists learned that personality was largely controlled from thispoint namely by removing a persons inhibitions.For the most part the brain has been a mystery that is wait to beopened. The last two decades have witnessed a period of research on the humancerebral functions comparable to the great era of uncovering initiated by Brocain 1861(Young, G,. Segalowitz, S,. Corter, C,. Trehub, S,.1983). We have leanedmore in the past 20 years about the bra in and its hemispheric asymmetry than wehad learned in combined previous history.(Kosslyn, 1993). Most of this new workhas been devoted to the study of cerebral functions in adults, but recentlythere has been a suppuration interest in infants and young children most especiallyamong the study of fall out preference. About 10 percent of the human population inleft-handed(Myers,1995). By looking at ancient writings this right-handpreference has seemed to break-dance right from the start of the human race. Italso is apparent that from ultrasound devises that about 9 in 10 fetuses suck